We had been doing soft swap with a black married couple for several weeks. Some of it was separate room swapping and sometimes we were in the same room. I'd already seen a lot, like when he fingered her and made her cum or licked her pussy and made her cum. Our agreement was we could do anything except fuck. I didn't actually see him enter her but I glanced over and saw that he was between her legs and inside her and kissing her. His wife kind of laughed and told me to let them do it. She then began sucking my cock which took my mind partially off the fact that my wife was getting laid right beside me.
I asked her about it later and she said it was an accident that he had been licking on her and came up to kiss her and his dick just kind of slipped inside her. She said that once he was inside her, she couldn't stop and so they continued until he came inside her pussy. I asked her if she wanted to fuck him again and she admitted that she did. I thought about it and asked if it was because his dick was bigger than mine. Yes. I asked what she'd do if I said I didn't want her to and she admitted that she'd probably do it behind my back anyway.
I asked her about it later and she said it was an accident that he had been licking on her and came up to kiss her and his dick just kind of slipped inside her. She said that once he was inside her, she couldn't stop and so they continued until he came inside her pussy. I asked her if she wanted to fuck him again and she admitted that she did. I thought about it and asked if it was because his dick was bigger than mine. Yes. I asked what she'd do if I said I didn't want her to and she admitted that she'd probably do it behind my back anyway.